/Engine/Source/Runtime/ApplicationCore/Public/GenericPlatform/GenericPlatformFramePacer.h
Sets the pace we would like to running at (30 = 30fps, 0 = unpaced). The generic implementation sets the value for rhi.SyncInterval according to FPlatformMisc::GetMaxRefreshRate().
the pace we will run at.
static int32 SetFramePace ( int32 FramePace )